Motor-driving mechanism.



L. E. UNDERWOOD. MOTOR DRIVING MEGHANISM.

APPLICATION FILED JUNE 22,1906.

t I d I m m o m n m w y N o d a E u w 2 w E m n w .6 M h u o L H b 1 m i h \w m r O 70.7 Q J w :52 K p w x w J I: m M Q w m M n WE N E L. E. UNDERWOOD. MOTOR DRIVING MECHANISM. APPLICATION FILED JUNE 22, 1900.

Patented May 10, 1910.

2 SHEETS-SHEET 2.

Witnesses:

Inventor- 7/ Louis E. Underwooc i, 5%; W by UNITED STATES PATENT OFFICE,

LOUIS E. UNDERWOOD, OF LYNN, MASSACHUSETTS, ASSIGNOB T0 GENERAL ELECTRIC COMPANY, A COBIBORATION OF NEW YORK.

MOTOR-DRIVING MECHANISM.

To all whom it may concern:

Be it known that I, LOUIS E. UNDnRWooD, a citizen of the United States, residing at Lynn, in the county of Essex, State of Massachusetts, have invented certain new and useful Improvements in Motor- Driving Mechanisms, of which the following is a specification.

My present invention relates to motor driven machinery and particularly to an electric motor driven linotype or similar machine, and comprises certain novel features of construction and arrangement whereby an efiicient and satisfactory flexible or yielding connection is established between the armature shaft of the electric driving motor and the member to be driven.

My invention also comprises features of construction and arrangement whereby a motor of standard design may be employed and in such manner that a minimum of floor ing a standard rather than a special motor and of economizing space in connection with certain types of machinery, as notably linoty e machines, are well known to those skilled in the art.

have illustrated and described forms in which my invention may be employed.

Of the drawings, Figure 1 is a perspective view of a portion of a linotype machine equipped with one form of my electric motor drive; Fig. 2 is an elevation on a larger scale than Fig. 1 of a portion of the apparatus shown in Fig. 1; Fig. 3 is an elevation at right angles to Fig. 2; Fig. 4 is an elevation partly in section, illustrating the gearing between the driving and driven members; Fig. 5 is 'an elevation at right angles to Fig. 4; and Fig. 6 is an elevation illustrating a modified construction.

Referring to the drawings, 1 represents the regular frame work of a machine to be operated, which in the embodiment disclosed is a linotype machine. To the frame work 1 is secured the shaft 2 which carries the driven wheel 3. A bracket or supporting Specification of Letters Patent.

' Application filed June 22, 1906. Serial lie-322,807.

Patented May 10, 1910.

cured upon it a driving wheel 12. One or more circumferentially extending grooves are formed in the driving wheel 12. As shown, the grooves 13 comprise an inner portion 14 having parallel sides and an outer portion 15 having inclined sides. Grooves 16, which may be substantially identical in form with the grooves 13, extend circumferentially around the driven wheel 3. Corresponding grooves 13 and 16 in the wheels 12 and 3, respectively, are in the same plane.

The wheel 12 is surrounded by annular members 17, one for each oove 13. The apertures in the members 1 are preferably equal to or greater than the external diameter of the wheel 12, so that the annular members may be readily moved axially into place over the body of the wheel 12. In the form of my invention disclosed, each annular member 17 consists of two apertured disks of suitable material, such as sole leather, or the like, which are cemented or otherwise secured together in some suitable manner. The inner edges of the disks 18 are tapered at 19 to enter the tapered portions of the grooves 13 and their outer edges are similarly tapered at 20 to enter the grooves 16. These features of my construction I prefer to arrange as dISClOSBd 1n Patent No. 451,987, granted May 12, 1891, to Frank H. Underwood.

It will be observed by reference to Flgs. 1 and 3 that the shaft 6 is at one side of the armature shaft of the motor. As a result, the armature shaft tends to move bodily under the action of gravity in the directlon indicated by the arrow in Fig. 3. Conse-,

'quently, the members 17 are held between the various parts are suitably proportioned and arranged, the force with which the memwith which the members 17 are gripped between the wheels 12 and 3 can be varied by varying the difference between the internal and external diameters of the members, and also by adjusting the motor frame with respect to the motor support 7 as by putting washers 7 of varying sizes between the motor feet and the support 7, as shown in Fig. 2, or by making the passage in the member 7 through which the bolts 10 pass in the form of elongated slots 10, as shown in Fig.

3, and varying the relative position of the motor frame and support. The slight difference in the interior and exterior diameters of the members 17, which in time may occur with usage, is ordinarily too small to materially afi'ect the power transmitted by them. The alinement or parallelism of the armature shaft 11 may be adjusted by manipulation of the bolts 21, which are at right angles to the bolts 4' and are carried in threaded passages formed in a portion of the bracket 4; and bear against the side of the frame work 1.

In the form of my invention shown in Fig. 6, the armature shaft 11 may be geared to the wheel 3 in substantially the same manner as in the construction just described. The motor 9 is supported, however, on a frame work 22 which may rest upon the same floor which supports the machine to be driven. The frame work 22 supports a shaft 23, on which is pivotally mounted a member 24. The member 24 is secured to the feet of the motor frame at one side of the armature shaft by bolts 25. The opposite feet of the motor rest upon helical springs 26 which are positioned by bolts 27 extending through bolt holes formed in the motor feet and holes formed in the frame 22. In this form of my invention, the springs 26 tend to turn the motor frame about the shaft 11 in the direction indicated by the arrow in Fig. 6. The connection between the driving and driven wheels in this form of my invention also is such that in case of accident the connection between the driving and driven members will readily yield without endangering the parts.

The gearing connections in the driving and driven wheels in both of the forms of my invention'disclosed have been found by actual experience to be efficient, reliable, lasting and economical. The motor supporting mechanism disclosed has also been found to be highly satisfactory in practice. It will be obvious to those skilled in the art, however, that certain features of my invention may be employed without a corresponding use of other features, and that changes may be made in the form of my invention without departing from its spirit, and I do not wish the claims hereinafter made to be limited to the particular embodiment disclosed, more than is made necessary by the state of the art.

What I claim as new and desire to secure by Letters Patent of the United States, is:

1. In combination, a machine comprising a wheel to be driven, an electric motor including a frame and a driving wheel, an annular member surrounding one of said wheels and engaged by both wheels, at support for the motor frame, and means tendmg to turn said frame to move the driving wheel toward the driven wheel.

2. In combination with the frame work of a machine to be driven, a bracket, parallel bolts for securing said bracket to the frame work, other bolts at an angle to the firstmentioned bolts for adjusting the relation between the bracket and the frame work, a wheel to be driven journaled in said frame work, a motor support pivoted to the said bracket, a motor having a frame secured to said support and a driving shaft, and frictional gearing between said driving shaft and wheel.

3. In combination with the frame work of a machine, a bracket detachably secured thereto, a supporting member hinged to the bracket, an electric motor comprising a frame having feet bolted to said supporting member and a rotating shaft, a wheel to be driven journaled in said frame work, frictional gearing between said rotating shaft and wheel, and means for adjusting said bracket to insure parallelism between said shaft and the axis of rotation of said wheel.

In witness whereof, ,I have hereunto set my hand this twentieth day of June, 1906. LOUIS E. UNDERW'OOD.

Witnesses:

JOHN A. MoMANUs, J12, HENRY O. WESTENDARP. 

